Tone-modulating shutter for phonograph-cabinets.



H. A. SAGE.

TONE MODULATING SHUTTER FOR PHONOGRAPH CABINETS.

APPLICATION FILED MAR. 5. 1916- 1 ,232,994. Patented July 3, 1917.

' burrs HERBERT A. SAGE, or DETROIT, MICHIGAN.

TONE-MQDULATING SHUTTER FOR PHONOGRAPH-CABINETS.

raaaoaa.

Specification of Letters Pate1it.

Patented July 3, 1917.

Application filed March 6, 1916. I Serial No. 82,279.

To all whom it may concern: 7

Be it known that I, HERBERT. A. SAGE, citizen of the United States, residing at De troit, countyof Wayne, State of Michigan,

have invented a certain new and useful improvement in 'lone-vlodulating Shutters for lhonograph Cabinets, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a tone modulating shutter for phonograph cabinets, shown in the accompanying drawings and more par ticularly set forth in the following specification and claims.

The object of my invention is to provide a tone modulating shutter adapted for adjustment to any degree of opening between its closed and maximum open position ;it

being automatically held in any desired adjusted position.

A further object of the invention is to so adapt the shutter that when fully open, it may serve as a shelf to receive records While transferring or replacing them upon the re volving table of the phonograph.

Another feature of the invention is the automatic gripping device to secure the shutter in. its several adjusted positions.

Other advantages and improvements will hereafter appear.

In the drawings accompanying this specification:

Figure 1 is a fragmentary perspective view of a phonograph cabinet showing the modulating shutter in its open position for use as a record shelf. The arrow indicates the arc of its travel when adjusting it to regulate its tone. c

Fig. 2 is a perspective view of the rocker arm and shelf supporting bracket, indieating a fragment of the cabinet frame inv which the device is journaled.

Fig. 3 is a detail sectional view through the adjustable bar connected with the rocker arm, and the resilient means for yieldingly securing it in its adjusted position.

Referring now to the letters of reference placed upon the. drawings e p A, denotes a phonograph cabinet with the horn and motor mechanism removed. B,

indicates a swingingshutter. C, denotes a metallic strip inserted in the edge of the shutter at each end having a projecting stub shaft, C, ,journaled in the frame A, of the cabinet.

D,-denotes a rocker arm mounted on one of the stub shafts O, which is there squared to receive it. E, is a slotted bar pivoted at e, to the rocker arm.

F, designates a strip secured to the side wall of the cabinet, through which projects a bolt G, enga ed by a thumb nut ll.

1, is a was ier encircling the bolt adjacent to the slotted bar E. J, is a spring sleeved upon the bolt, one end of which bears against the thumb nut H,the other end being in contact with the washer ;-the purpose of the spring being to force the slotted bar into frictional locking relation with the strip F, secured to the cabinet, that it may yieldingly maintain the shutter in any adjusted position.

The tone modulating shutter B, may if desired be provided with a suitable lock to secure it in its closed position to keep children and others from meddling with the instrument. When the shutter is in its open position, itis adapted for use as a shelf to receive the records while removing or replacing the records upon the revolving table of the phonograph.

To insure the shutter being supported rigidly in its open positionas when used as a shelf-and to limit the further opening of the same, the rocker arm D, is so positioned with reference to the frame of the cabinet that its vertical arm bears against the frame ;as will be readily understood upon reference to Fig. 2.

Having thus described my invention, what I claim is 1. In a device of the character described, a cabinet, a swinging shutter, a metallic strip secured to each end of the shutter having stub shafts journaled in the frame of the cabinet, a rocker arm secured to one of the stub shafts and extending at right angles thereto, a strip secured to the inner side wall of the cabinet, a bolt extending through said strip and fastened'in the cabinet, a thumbnut screwed on said bolt, a bar pivoted to the rocker arm and provided with an elongated slot, through which said bolt extends, said bar being slidable on said bolt, and a spring interposed on said bolt between said bar and said thumb-nut, whereby the shutter is frictionally held in a position to which it may be adjusted.

lltl

2. In a device of the character described, a cabinet, a swinging shutter, a metallic strip secured to each end of the shutter having projecting stub shafts journaled in the frame of the cabinet, a rocker arm secured to one of the stub shafts and extending at right angles thereto, said rocker arm being so positioned With reference to the frame of the cabinet that it may contact therewith to serve as a support for the shutter when opened to its limit, and means connected to said rocker arm and located Within the cabinet for frictionally holding the said shutter in any position to-Which it may be ad justed. V i

In testimony whereof, I sign this specification in the presence of tWo Witnesses.

HERBERT A. SAGE.

Witnesses i S. E. THOMAS, J. L. DUFF.

Copies of this patent maybe obtained for five cents each, by addressing the flommissioner' of latents,

1 Washington, D. G. 

